1. In dentistry, any material used in investing. 2. In psychoanalysis, the psychic charge or cathexis invested in an object.
- refractory i. an i. material which can withstand the high temperatures used in soldering or casting.
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1) an external covering of a cell, part, or organism
2) a layer of heat-resistant material in which a dental appliance (as a bridge or inlay) is cast or in which it is embedded before soldering
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in·vest·ment (in-vestґmənt) 1. any tissue, such as fascia, that envelops or covers other tissues or parts. 2. a material applied as a soft paste to a pattern that hardens to form a mold for casting.Medical dictionary. 2011.